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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GPU_COMMAND_BUFFER_CLIENT_GPU_CONTROL_H_
#define GPU_COMMAND_BUFFER_CLIENT_GPU_CONTROL_H_
#include <stdint.h>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "gpu/command_buffer/common/capabilities.h"
#include "gpu/command_buffer/common/mailbox.h"
#include "gpu/gpu_export.h"
namespace gfx {
class GpuMemoryBuffer;
}
namespace gpu {
// Common interface for GpuControl implementations.
class GPU_EXPORT GpuControl {
public:
GpuControl() {}
virtual ~GpuControl() {}
virtual Capabilities GetCapabilities() = 0;
// Create a gpu memory buffer of the given dimensions and format. Returns
// its ID or -1 on error.
virtual gfx::GpuMemoryBuffer* CreateGpuMemoryBuffer(
size_t width,
size_t height,
unsigned internalformat,
unsigned usage,
int32_t* id) = 0;
// Destroy a gpu memory buffer. The ID must be positive.
virtual void DestroyGpuMemoryBuffer(int32_t id) = 0;
// Inserts a sync point, returning its ID. Sync point IDs are global and can
// be used for cross-context synchronization.
virtual uint32_t InsertSyncPoint() = 0;
// Inserts a future sync point, returning its ID. Sync point IDs are global
// and can be used for cross-context synchronization. The sync point won't be
// retired immediately.
virtual uint32_t InsertFutureSyncPoint() = 0;
// Retires a future sync point. This will signal contexts that are waiting
// on it to start executing.
virtual void RetireSyncPoint(uint32_t sync_point) = 0;
// Runs |callback| when a sync point is reached.
virtual void SignalSyncPoint(uint32_t sync_point,
const base::Closure& callback) = 0;
// Runs |callback| when a query created via glCreateQueryEXT() has cleared
// passed the glEndQueryEXT() point.
virtual void SignalQuery(uint32_t query, const base::Closure& callback) = 0;
virtual void SetSurfaceVisible(bool visible) = 0;
// Invokes the callback once the context has been flushed.
virtual void Echo(const base::Closure& callback) = 0;
// Attaches an external stream to the texture given by |texture_id| and
// returns a stream identifier.
virtual uint32_t CreateStreamTexture(uint32_t texture_id) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(GpuControl);
};
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_CLIENT_GPU_CONTROL_H_
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